The MRCOOL MST05 Smart Wi-Fi Mini Stat Thermostat is a compact HVAC control device designed to manage compatible heating and cooling systems with convenient wireless connectivity. It works by monitoring indoor temperature and communicating with the HVAC equipment to automatically adjust operation based on user settings, helping maintain consistent comfort. Commonly used with compatibl... https://www.partshnc.com/mrcool-smart-wi-fi-mini-stat-thermostat-mst05